# Bell Work Put in Scientific Notation g __________________

## Presentation on theme: "Bell Work Put in Scientific Notation g __________________"— Presentation transcript:

Bell Work Put in Scientific Notation 360 000000 g __________________
Top of page 15 Put in Scientific Notation g __________________ 48000 m ______________________ cm ____________________ X (DO THE OPPOSITE)___________

Dimensional Analysis Page 13 of Notebook
Scientific Notation & Dimensional Analysis Page 13 of Notebook

Ojective: Write numbers in Scientific Notation
Evaluate word problems using Scientific Notation Evaluate Dimensional Analysis

Main Idea Read Aloud Page 40

WHAT IS SCIENTIFIC NOTATION?
A SHORT WAY TO WRITE VERY SMALL OR VERY LARGE NUMBERS 1,000,000,000,000 cm 1.0 X cm

Rules for Scientific Notation
Page 12 Put the Decimal after the 1st digit and drop the zeroes To find the exponent count the number of places from the end of the number. x 103

Guided Practice: Turn to Page 40 in your chemistry text book
Example Problem 2.2: The diameter of the sun is 1,392,000 km The density of the sun’s lower atmosphere is g/cm3

Rules for Multiplication/Division in Scientific Notation
Page 14 Multiplication Division Multiply Coefficients 2. Add the exponents (base 10 remains) Divide the coefficients Subtract Exponents (base 10 remains).

Page 41; Problems 11 & 12 Page 42; Problems 15 & 16
Independent Practice Page 41; Problems 11 & 12 Page 42; Problems 15 & 16

What is Dimensional Analysis?
A systematic approach to solving problems that using conversions factors. Conversion factor-ratio of equivalent factors Example: 1000 meter = 1 kilometer or 1km 1000m Reciprocal ?

Guided Practice Page 45; Problems

Classwork/The Price of Gasoline
Assume that the Gasoline in Europe cost \$0.989 per liter and the current price is \$2.59 per gallon in the United States. Which country has the lowest price. 1L = 1 quart 4 quarts = 1 gallon

\$3.96 /gallon The European Gas is extremely expensive.

Extra-Credit/Cooking Conversion
The density of peanut oil is g/mL. There are 237 mL in a measuring cup. If a recipe calls for ¼ cup of peanut oil, How many grams of peanut oil are required(hint: .250= ¼ ) ?